• 제목/요약/키워드: Dependency structure

검색결과 338건 처리시간 0.03초

국가해양력시스템의 구조모델화에 관한 연구 (A Study on the Structural Modelling of National Maritime Power System)

  • 임봉택;이철영
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 1999년도 추계학술대회논문집
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    • pp.153-161
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    • 1999
  • For composing the structure model of national maritime power system by system structural modelling, in this study, the 50 basic factors are selected by survey of the extensive and thorough literatures on maritime, sea, maritime power and sea power. And the basic factors are classified into 36 component factors by cluster method. The 9 attributes are extracted by the application of the principle component analysis method, one of the factor analysis method in system engineering, to component factors. We defined the attributes composing the national maritime power system by integration the result of this study and existed our studies relate to this topic. Which are showed in table 8. and we showed the structure model of national maritime power system in figure 3. In table 8, the 9 attributes are as follows: the fundamental power of maritime, shipping and port power, naval power, fishing power, shipbuilding power, the power of ocean research and development, dependency on seaborne trade, the protection power of ocean environment and the will and inclination of government.

Bottom Collector와 단일 금속층 구조로 설계된 SiGe HBT의 전기적 특성 (Structure and Electrical Properties of SiGe HBTs Designed with Bottom Collector and Single Metal Contact)

  • 최아람;최상식;윤석남;김상훈;서형기;심규환
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2007년도 하계학술대회 논문집 Vol.8
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    • pp.187-187
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    • 2007
  • This paper presents the electrical properties of SiGe HBTs designed with bottom collector and single metal layer structure for RF power amplifier. Base layer was formed with graded-SiGe/Si structures and the collector place to the bottom of the device. Bottom collector and single metal layer structures could significantly simplify the fabrication process. We studied about the influence of SiGe base thickness, number of emitter fingers and temperature dependence (< $200^{\circ}C$) on electrical properties. The feasible application in 1~2GHz frequency from measured data $BV_{CEO}$ ~10V, $f_r$~14 GHz, ${\beta\simeq}110$, NF~1 dB using packaged SiGe HBTs. We will discuss the temperature dependent current flow through the e-b, b-c junctions to understand stability and performance of the device.

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고층기상관측자료를 이용한 한반도 중부지방의 고도별 구름 발생빈도 연구 (A Study on Occurrence Frequency of Cloud for Altitude in the Central Region of the Korean Peninsula using Upper-Air Observation Data)

  • 김인용;박혜령;김민희
    • 한국군사과학기술학회지
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    • 제22권5호
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    • pp.716-723
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    • 2019
  • It is crucial to understand the characteristics of cloud occurrence frequency for development of high precision guided missile using infrared imaging sensor. In this paper, we investigated the vertical structure of cloud for altitude using upper-air observation data. We find that cloud occurrence frequency is high at altitudes of 1.3 km and 9.5 km. Theses features have seasonal and temporal dependency. In the summer, cloud often occur more than average regardless of altitude. In the winter, low clouds occur frequently, and high clouds do not occur well. In temporal characteristics, clouds occur more frequently in daytime than in nighttime regardless of altitude. Many of clouds exist in single layer or double layers in the air. We also find that the 40 % of cloud occurrence frequency at high altitude when low clouds under altitude of 2 km cover entire sky.

地方化時代의 開發패러다임과 그 開發戰略 硏究 (A study on the local development paradigm and strategy in the era of localization)

  • 강학순;박찬석
    • 대한지리학회지
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    • 제30권2호
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    • pp.132-145
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    • 1995
  • 지금 우리나라가 지향하고 있는 '지방화를 통한 $\ulcorner$세계화$\lrcorner$ 발전전략'은 하향식 개 발패러다임과 상향식 개발패러다임의 통합이 전제되어야 한다. 본 연구는 기든스(A. Giddens)의 $\ulcorner$구조화이론(structuration theory)$\lrcorner$을 토대로 이들 상반된 양대 개발패러다임 을 통합하고 이에 입각해서 지방발전 개발전략을 논구하고자 한다. 통합적개발 패러다임이 란 세계자본주의체계의 확대, 심화 과정인 하향식 개발패러다임을 $\ulcorner$발전$\lrcorner$ 혹은 $\ulcorner$종속$\lrcorner$ 둘 중 하나인 것으로만 규정짓는 이원론적 인식에서 부터 그것을 $\ulcorner$구조화이론$\lrcorner$에 입각된 그대로 인식하는 것, 즉 그것을 세계자본주의 중심국가로서는 발전으로 보지만 주변국으로 서는 사안에 따라 종속으로 볼 수 있다는 일원론적 인식에로의 구조적 전환이다. 따라서 주 변국이 발전을 성취하기 위한 핵심적 과제는 먼저, 발전이란 단독.고립적 현상이 아니라 세계의 '체계 현상'이고 또 종속은 실제적 현실임이 $\ulcorner$구조의 이중성$\lrcorner$ 매카니즘의 학적 내 면화를 토대로 인식되어야 한다. 그리고 이러한 인식 위에서 휴머니즘에 입각된 생동감 넘 치는 정치가 이루어지는 정의로운 지역사회를 만들어 경제를 그러한 국가 혹은 지역사회의 정치적 권위 '밑에' 두고 한편으로 지역민의 $\ulcorner$자력(empowerment)$\lrcorner$$\ulcorner$능력 (capacitation)$\lrcorner$을 증강시켜야 한다. 지방화시대의 개발전략에는 이러한 통합적 패러다임의 실천적 과제가 효율적으로 달성될 수 있는 구체적인 지리공간정책이 포함되어야 한다.

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모바일 베이커리 어플리케이션에 대한 지각된 유용성과 용이성이 지속적 이용에 미치는 영향 (The Effects of Mobile Bakery Application's Perceived Usefulness and Easiness on Its Continuous Use)

  • 이명호;소영진
    • 한국조리학회지
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    • 제21권2호
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    • pp.171-186
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    • 2015
  • 본 연구는 모바일 베이커리 어플리케이션에 대한 혁신성, 정보의존성, 정보제공 충분성 및 리뷰 신뢰성이 지각된 유용성과 지각된 용이성 그리고 최종적으로 지속적 이용에 미치는 영향관계를 검증하여 베이커리산업에 유용한 정보를 제시하고자 하였다. 자료 수집은 2014년 9월 1일부터 30일까지 실시하였으며, 설문지는 총 500부를 배포하여 455부를 회수하였고, 이 중 통계분석이 가능한 441부에 대하여 SPSS 18.0과 AMOS 18.0을 이용하여 요인분석과 신뢰성 검증을 실시하고, 제시된 연구가설을 검증하기 위해서 공분산 구조분석을 실시하였다. 분석결과, 첫째, 혁신성은 지각된 유용성과 지각된 용이성에 유의적인 영향을 미치는 것으로 나타났다. 둘째, 정보의존성은 지각된 유용성과 지각된 용이성에 유의적인 영향을 미치는 것으로 나타났다. 셋째, 정보제공 충분성은 지각된 유용성과 지각된 용이성에 유의적인 영향을 미치는 것으로 나타났다. 넷째, 리뷰신뢰성은 지각된 유용성과 지각된 용이성에 유의적인 영향을 미치는 것으로 나타났다. 다섯째, 지각된 용이성은 지각된 유용성에 유의적인 영향을 미치는 것으로 분석되었다. 마지막으로 지각된 유용성과 지각된 용이성은 모바일 베이커리 어플리케이션의 지속적 이용에 유의적인 영향을 미치는 것으로 분석되었다.

반도전층을 갖는 MDPE의 운전 및 절연파괴 특성 (Dielectric and Breakdown Characteristics of MDPE included Semiconductor layer)

  • 유성수;이종찬;박대희
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1999년도 하계학술대회 논문집 D
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    • pp.1633-1635
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    • 1999
  • In this study, we evaluated the dependence of thickness and temperature in the breakdown strength of MDPE and effect of semiconductor. As the result, breakdown strength trend to decrease according to the increase of thickness and temperature. We obtained the result that the breakdown strength was a little lower in the structure of Semi/MDPE than Semi/MDPE/Semi, but breakdown strength of MDPE was greater both of all. The dependency of permittivity, tan ${\delta}$ and conductance on frequency and temperature were investigated. Both of the specimans showed the trend of decreased in permittivity as the temperature increased but increase as the frequency increased.

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Selection of a Grammatical Subject in English Correlative Conjunction Phrases: An Optimality-Theoretic Approach

  • Khym, Han-Gyoo
    • International Journal of Advanced Culture Technology
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    • 제5권4호
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    • pp.44-50
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    • 2017
  • The topic of selection of a grammatical subject in a correlative conjunction phrase has long failed to attract the attention of linguists due to some difficulties not only in figuring out the internal structure of NP's conjoined by a correlative conjunction but also in its heavy dependency on the representational aspects each correlative conjunction demonstrates. In this paper, I have explored the seemingly complex patterns in the selection of a grammatical subject in a correlative conjunction phrase in the frame of the Optimality Theory (Prince & Smolensky 1993, 2008). I show that, with the help of three newly developed constraints such as MinDist, Focus, and PARSE which are ranked relatively to each other, an optimal grammatical subject out of two NP candidates conjoined by a correlative conjunction can be correctly selectable.

The Effect of Processing Parameters on the Deposition Behavior of a Spent Fuel Surrogate in the Molten Salt Electrorefining

  • Lee, Jong-Hyeon;Kang, Young-Ho;Hwang, Sung-Chan;Kim, Eung-Ho;Yoo, Jae-Hyung
    • 한국방사성폐기물학회:학술대회논문집
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    • 한국방사성폐기물학회 2004년도 학술논문집
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    • pp.319-329
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    • 2004
  • The electrorefining experiments with an anode composed of U, Y, Gd, Nd and Ce (or U, Gd, Dy and Ce) were carried out in the KC1-LiCl eutectic melt at $500^{\circ}C$, Uranium was the major component in the cathode deposits at the high initial uranium concentration, and the separation factors of the uranium with respect to the rare earths (REs) were calculated according to the applied voltage and the uranium concentration in the molten salt. The current efficiency was inversely in proportion to the applied voltage in the range of 1.0 V to 1, 9 V (vs. STS304L). The dependency of the applied voltage on the current efficiency as well as the deposition rate was discussed in terms of the microstructural feature and crystal structure of the deposit.

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회전압축기형 스털링냉동기의 성능에 관한 실험적 연구 (The Experimental Study of the Performance of the Rotary Stirling refrigerator)

  • 홍용주;박성제;김효봉;김양훈;최영돈
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2004년도 추계학술대회
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    • pp.1312-1316
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    • 2004
  • The Stirling refrigerators have been widely used for the cooling of the infrared detector and HTS to the cryogenic temperature. The Stirling refrigerator with the rotary compressor are applicable to the cooling device for the compact mobile thermal imaging system, because the refrigerators have the compact structure and light weight. The typical performance factors of the Stirling refrigerator are the cool-down time, cooling capacity at the desired temperature and the input power. And the above performance factors are depends on the thermal insulation characteristics of the Dewar. In this study, the steady thermal load of the Dewar and the performance of the Stirling refrigerator were measured. The results show the dependency of the input power and the charging pressure on the performance of the refrigerator.

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공통변환 기반 다국어 자동번역을 위한 언어학적 모델링 (Linguistic Modeling for Multilingual Machine Translation based on Common Transfer)

  • 최승권;김영길
    • 한국언어정보학회지:언어와정보
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    • 제18권1호
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    • pp.77-97
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    • 2014
  • Multilingual machine translation means the machine translation that is for more than two languages. Common transfer means the transfer in which we can reuse the transfer rules among similar languages according to linguistic typology. Therefore, the multilingual machine translation based on common transfer is the multilingual machine translation that can share the transfer rules among languages with similar linguistic typology. This paper describes the linguistic modeling for multilingual machine translation based on common transfer under development. This linguistic modeling consists of the linguistic devices such as 1) multilingual common Part-of-Speech set, 2) multilingual common transfer format, 3) multilingual common transfer chunking, and 4) multilingual common transfer rules based on linguistic typology. Validity of this linguistic modeling for multilingual machine translation is shown in the simulation. The multilingual machine translation system based on common transfer including Korean, English, Chinese, Spanish, and French will be developed till 2018.

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